GB812464A - Improvements in and relating to control systems for electric motors - Google Patents

Improvements in and relating to control systems for electric motors

Info

Publication number
GB812464A
GB812464A GB3324956A GB3324956A GB812464A GB 812464 A GB812464 A GB 812464A GB 3324956 A GB3324956 A GB 3324956A GB 3324956 A GB3324956 A GB 3324956A GB 812464 A GB812464 A GB 812464A
Authority
GB
United Kingdom
Prior art keywords
winding
response
control systems
field
amplidyne
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3324956A
Inventor
Geoffrey Edmund Woodliff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
Filing date
Publication date
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB812464A publication Critical patent/GB812464A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00Control systems of elevators in general
    • B66B1/02Control systems without regulation, i.e. without retroactive action
    • B66B1/06Control systems without regulation, i.e. without retroactive action electric
    • B66B1/12Control systems without regulation, i.e. without retroactive action electric with devices, e.g. handles or levers, located at a control station for direct control movements, e.g. electric mining-hoist control systems

Abstract

812,464. Automatic speed control systems. BRITISH THOMSON-HOUSTON CO. Ltd. Sept. 19, 1957 [Oct. 31, 1956], No. 33249/56. Class 38 (4). In a control system for an electric motor M, Fig. 1, supplied from a variable voltage generator G the field G1 of which is produced by an amplidyne exciter A, whose field A1 is energized in response to the difference between an adjustable reference voltage and a feedback voltage GVP and wherein response is delayed by connecting an opposing field winding A11 of the amplidyne to a winding G11 magnetically coupled with winding G1, a resistance RC, Fig. 2, in series with the windings is shunted by a rectifier RE1, RE2 to give the system a more rapid response in one direction of speed error. Forward contacts F and reverse contacts R are shown for a mine winder in which the speed may be controlled by the manual positioning of a wiper on a potentiometer VR. The feedback voltage may be from a tachometer generator.
GB3324956A 1956-10-31 Improvements in and relating to control systems for electric motors Expired GB812464A (en)

Publications (1)

Publication Number Publication Date
GB812464A true GB812464A (en) 1959-04-22

Family

ID=1743383

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3324956A Expired GB812464A (en) 1956-10-31 Improvements in and relating to control systems for electric motors

Country Status (1)

Country Link
GB (1) GB812464A (en)

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